Horology: time measuring systems or devices – Chronological – With simultaneous time indicating means
Patent
1981-10-21
1984-04-24
Weldon, Ulysses
Horology: time measuring systems or devices
Chronological
With simultaneous time indicating means
368 73, 368250, 368251, G04B 2302
Patent
active
044445121
ABSTRACT:
For an electronic timepiece arranged and adapted to give reminders there is rovided a method for comparing a timekeeping state (1) with the contents of a register (2), a circuit (3) for applying the method and a utilization of such circuit.
A programmable register (2) releases a signal whenever the contents of at least one counter (1) coincide with the contents of a portion of the register (2). In another portion of the register (2) is programmed the code of a state (-) which corresponding counters (1) will never attain under normal operations and the comparison (3) between the state of these counters (1) and that of said other portion of the register (2) is validated whatever may be the state. The comparison circuit (3) may be obtained from the arithmetic and logic units of a microprocessor as employed in a reminder giving timepiece.
REFERENCES:
patent: 3664116 (1972-05-01), Emerson et al.
patent: 3664117 (1972-05-01), McIntosh
patent: 3745761 (1973-07-01), Tsuruishi
patent: 3759029 (1973-09-01), Komaki
patent: 4093992 (1978-06-01), Kawamura et al.
patent: 4270194 (1981-05-01), Morokawa et al.
Societe Suisse pour l'Industrie Horlogere Management Services S.
Weldon Ulysses
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